dehydroascorbic acid

(redirected from Dehydroascorbate)
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dehydroascorbic acid

[dē¦hī·drō·ə¦skȯr·bik ′as·əd]
(organic chemistry)
C6H6O6 A relatively inactive acid resulting from elimination of two hydrogen atoms from ascorbic acid when the latter is oxidized by air or other agents; has potential ascorbic acid activity.
References in periodicals archive ?
Glutathione oxidised by ROS forms oxidased glutathione, whereas ascorbic acid oxidased by the same compound forms monodehydroascorbate (MDA) and dehydroascorbate (DHA).
Hydrogen peroxide is most likely generated intracellularly during ascorbate metabolic oxidation to dehydroascorbate.
Primed seed generally exhibited greater activities of antioxidative enzyme (except dehydroascorbate reductase, DHAR) than nonprimed control seed before storage.
4 Dehydroascorbate DHA + 2GSH [right arrow] AA + GSSG reductase (DHAR) 1.
Toxicity, radiation sensitivity modification, and metabolic effects of dehydroascorbate and ascorbate in mammalian cells.
The antioxidant property of AA resides in its ability to lose 2 electrons, generating dehydroascorbate (DHA) in a reversible reaction.
Dioscorins, the major storage proteins of DB also was reported to have both dehydroascorbate reductase and monodehydroascorbate activities (Hou et al.
This radical can then either be reduced back to ascorbate by MDHAR or it can be nonenzymatically disproportionated to dehydroascorbate (DAsA), which is then reduced back to ascorbate by glutathione.
Investigation of proline, total protein, chlorophyll, ascorbate and dehydroascorbate changes under drought stress in Akria and Mobil tomato cultivars.
Nonetheless 2 molecules of MDHA can be nonenzymatically converted to MDHA and dehydroascorbate which is then reduced to ascorbate via the dehydroascorbatereductase and GR cycle (Szalai et al.
Toxicily, radiation sensitivity modification, and metabolic effects of dehydroascorbate and ascorbate in mammalian cells.
This ratio is maintained by glutathione reductase (GR), monodehydroascorbate reductase (MDAR) and dehydroascorbate reductase (DHAR) using NADPH as reducing agent (Karpinska, 2000; Polle, 2001).